CN212255847U - Plastic aspheric gluing structure of vehicle-mounted lens - Google Patents
Plastic aspheric gluing structure of vehicle-mounted lens Download PDFInfo
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- CN212255847U CN212255847U CN202020794357.2U CN202020794357U CN212255847U CN 212255847 U CN212255847 U CN 212255847U CN 202020794357 U CN202020794357 U CN 202020794357U CN 212255847 U CN212255847 U CN 212255847U
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Abstract
The utility model relates to a plastic non-spherical gluing structure of a vehicle-mounted lens; comprises a first lens, an adhesive layer and a second lens; the first lens is a lens with two convex spherical surfaces; the second lens is a lens with a concave surface on one surface, and the convex spherical surface of the first lens is matched with the concave surface of the second lens; the first lens and the second lens are fixed together through an adhesive layer; and glue overflowing gaps are arranged on two sides of the groove of the concave surface of the second lens or two sides of the convex spherical surface of the first lens. The first lens comprises a first lens object surface and a first lens image surface, the second lens comprises a second lens object surface and a second lens image surface, and the first lens image surface and the second lens object surface are fixed together through an adhesive layer; the object surface of the second lens is a concave surface, and the image surface of the second lens is a concave surface or a spherical surface. The utility model discloses simple structure, it is with low costs, even if it is overcast and rainy, night, its imaging quality also can effectively be guaranteed.
Description
Technical Field
The utility model relates to a veneer structure of on-vehicle camera lens, concretely relates to simple structure, it is with low costs, even if it is at overcast and rainy day, night, the plastics aspheric surface veneer structure of on-vehicle camera lens that its imaging quality also can effectively guarantee.
Background
Under the influence of high-end automobile intellectualization, artificial intelligence, communication and sensing technology are continuously developed, and automatic driving is realized by one step more. Both scientific and technical enterprises and traditional automobile factories begin to invest a lot of research and development resources to promote the development of complete vehicle-mounted lenses.
Although various vehicle-mounted lenses are widely applied to various automobiles at present, manufacturers are numerous. But the product quality is not uniform, and the industry does not have a specific judgment standard for clients to refer to. Therefore, products of a plurality of workshop companies are greatly popularized to the market, so that a plurality of clients cannot achieve the expected using effect after being installed.
Currently, the major competitive manufacturers of optical products in the market include japanese physical light, taiwan optical factories, etc. But the product has complex structure, high distortion and poor reliability. Therefore, only the first generation of vehicle-mounted lens has poor expansibility in practical application, and cannot be applied to a high-end imaging system. Further, the product cost of japan optics corporation is high, the cost performance of market competition is weak, and taiwan lens quality is slightly poor. Therefore, sonoprol, as a company with a good background, has the advantage of relatively large technology and background when entering the markets of europe and america. Once the aspheric surface gluing process is successfully developed, the imaging quality of the lens is greatly improved, and the overall cost of the lens is reduced. So that sonoprol will dominate the field over competitors and in subsequent market competition.
The sannop precision optics limited sees this huge market, developing a series of lenses using plastic aspheric surface technology through autonomous research and development and cooperation with customers. The plastic gluing process developed by my now exceeds some glass gluing processes on the market, and the optical characteristics are more stable and can pass the life test of the public group.
The series of lens has more than 200 thousands of pixels, has low distortion, well controls stray light, and completely meets the requirement of video shooting of automobiles under various conditions. At present, the design of the lens has passed customer acceptance, and the product has started to be mass produced and used in the video imaging system of the car, by which time the customer feedback is good.
SUMMERY OF THE UTILITY MODEL
To the above problem, the main object of the present invention is to provide a plastic aspheric gluing structure of a vehicle-mounted lens, which has a simple structure and a low cost, and can effectively ensure the imaging quality even if the vehicle-mounted lens is used in rainy days and nights.
The utility model discloses a solve above-mentioned technical problem through following technical scheme: a plastic non-spherical gluing structure of a vehicle-mounted lens; the plastic aspheric surface gluing structure of the vehicle-mounted lens comprises: the lens comprises a first lens, an adhesive layer and a second lens;
the first lens is a lens with two convex spherical surfaces; the second lens is a lens with a concave surface on one surface, and the convex spherical surface of the first lens is matched with the concave surface of the second lens; the first lens and the second lens are fixed together through an adhesive layer; and glue overflowing gaps are arranged on two sides of the groove of the concave surface of the second lens or two sides of the convex spherical surface of the first lens.
In a specific embodiment of the present invention; the first lens comprises a first lens object surface and a first lens image surface, the second lens comprises a second lens object surface and a second lens image surface, and the first lens image surface and the second lens object surface are fixed together through an adhesive layer; the second lens object surface is a concave surface, and the second lens image surface is a concave surface or a spherical surface.
In a specific embodiment of the present invention; the object surface of the first lens is a spherical surface, the curvature radius is 3.5968, the central thickness of the first lens is 1.7386mm, the refractive index is 1.543915, and the Abbe coefficient is 55.951198.
In a specific embodiment of the present invention; the first lens image surface is a spherical surface, and the curvature radius is-1.9281; the second lens had a center thickness of 2.4758mm, a refractive index of 1.63549, and an Abbe number of 23.910931.
In a specific embodiment of the present invention; the object surface of the first lens is a spherical surface, the curvature radius is 2.5379, the central thickness of the first lens is 0.9911mm, the refractive index is 1.534636, and the Abbe coefficient is 56.196755.
In a specific embodiment of the present invention; the image surface of the first lens is a spherical surface, and the curvature radius is-1.5000; the second lens had a center thickness of 0.4000mm, a refractive index of 1.632724, and an Abbe number of 23.326526.
In a specific embodiment of the present invention; the object plane of the first lens is a spherical surface, the curvature radius is 4.8309, the central thickness of the first lens is 1.545mm, the refractive index is 1.534636, and the Abbe coefficient is 56.196755.
In a specific embodiment of the present invention; the first lens image surface is a spherical surface, and the curvature radius is-1.6594; the second lens has a central thickness of 0.400mm, a refractive index of 1.63549 and an Abbe number of 23.910931.
In a specific embodiment of the present invention; the adhesive layer was formed using OP1030k glue from Nippon Denshoku industries Co., Ltd.
The utility model discloses an actively advance the effect and lie in: the utility model provides a plastics aspheric surface veneer structure of on-vehicle camera lens has following advantage: the utility model discloses simple structure, it is with low costs, even if it is overcast and rainy, night, its imaging quality also can effectively be guaranteed.
Drawings
Fig. 1-1 is one embodiment of the overall structure diagram of the present invention.
Fig. 1-2 show a second embodiment of the overall structure of the present invention.
Fig. 1-3 are schematic views of the overall structure of the present invention.
The utility model discloses the name that well reference numeral corresponds:
the lens comprises a first lens 1, an adhesive layer 3, a second lens 2 and an overflow glue gap 4; the lens comprises a first lens object surface 101, a first lens image surface 102, a second lens object surface 201 and a second lens image surface 202.
Detailed Description
The following provides a preferred embodiment of the present invention with reference to the accompanying drawings to explain the technical solutions of the present invention in detail.
Fig. 1-1 is one embodiment of the overall structure diagram of the present invention. Fig. 1-2 show a second embodiment of the overall structure of the present invention. Fig. 1-3 are schematic views of the overall structure of the present invention. As shown in the above figures: the utility model provides a plastic non-spherical gluing structure of a vehicle-mounted lens; the method comprises the following steps: a first lens 1, an adhesive layer 3 and a second lens 2; the first lens 1 is a lens with two convex spherical surfaces; the second lens 2 is a lens with a concave surface on one surface, and the convex spherical surface of the first lens 1 is matched with the concave surface of the second lens 2; the first lens 1 and the second lens 2 are fixed together through an adhesive layer 3; and glue overflow gaps 4 are arranged on two sides of the groove of the concave surface of the second lens 2 or two sides of the convex spherical surface of the first lens 1.
The first lens 1 comprises a first lens object surface 101 and a first lens image surface 102, the second lens 2 comprises a second lens object surface 201 and a second lens image surface 202, and the first lens image surface 102 and the second lens object surface 201 are fixed together through an adhesive layer 3; the second lens object surface 201 is concave, and the second lens image surface 202 is concave or spherical.
The parameters of the monolithic lens simulated by the optical design software are as follows:
focal length 4.812mm
1 effective light-passing area of the lens is phi 2.9mm
The detailed parameters of the design are listed in table 1, and the first row lists the principal parameters of the bond, the focal length EFL, 4.812mm, the effective clear area of lens 1, phi 2.9mm, and the effective clear area of lens 2, phi 3.6 mm.
The title column of table 1 lists: "surface", "type", "radius of curvature", "thickness", "refractive index" and "Abbe's number". The lens element material is defined by a refractive index and an abbe number. In Table 1, a blank cell in the "refractive index" column indicates that the value in the "thickness" cell next to it is the distance to the next lens surface vertex. The "refractive index" column provides the refractive index of the lens material at 588 nm.
In Table 1, the radius of curvature of the object plane is infinite, i.e., the plane, at infinity from the center vertex of the next surface (object plane of lens 1).
The surface 1 is the object plane of the lens 1, the surface is a spherical surface, the curvature radius is 3.5968, the distance from the central vertex 1.7386mm of the next surface (the image plane of the lens 1 or the object plane of the lens 2) is 1.7386mm, the refractive index is 1.543915, and the Abbe coefficient is 55.951198.
The surface 2 is the image surface of the lens 1, and the distance between the surface and the object surface of the lens 2 is 0, and the curvature radius of the surface is the same, so that the surface 2 is the image surface of the lens 1 and the object surface of the lens 2, the surface is a spherical surface, the curvature radius is-1.9281, the distance from the next surface (the image surface of the lens 2) is 2.4758mm, namely the center thickness of the lens 2 is 2.4758mm, the refractive index is 1.63549, and the Abbe coefficient is 23.910931.
The surface 3 is the image surface of the lens 2, the surface is a spherical surface, the curvature radius is-6.1260 mm, and the distance from the central vertex of the next surface (the optical filter object surface) is 0.1000 mm.
The parameters of the monolithic lens simulated by the optical design software are as follows:
focal length 28.7164mm
Effective light-passing area phi of 1mm of lens
Effective light-passing area phi of 2.47mm of lens
The detailed parameters of the design are listed in table 2, the first row lists the focal length 28.7164mm, the effective clear area phi 1.84mm for lens 1, and the effective clear area phi 2.47mm for lens 2, the main parameters of the lens.
The title column of table 2 lists: "surface", "type", "radius of curvature", "thickness", "refractive index" and "Abbe's number". The lens element material is defined by a refractive index and an abbe number. In Table 1, a blank cell in the "refractive index" column indicates that the value in the "thickness" cell next to it is the distance to the next lens surface vertex. The "refractive index" column provides the refractive index of the lens material at 588 nm.
In Table 2, the radius of curvature of the object plane is infinite, i.e., the plane, at infinity from the center vertex of the next surface (object plane of lens 1).
The surface 1 is the object plane of the lens 1, the surface is a spherical surface, the curvature radius is 2.5379, the distance from the central vertex 0.9911mm of the next surface (the image plane of the lens 1 or the object plane of the lens 2) is 0.9911mm, the refractive index is 1.534636, and the Abbe coefficient is 56.196755.
The surface 2 is the image surface of the lens 1, and because the distance between the surface and the object surface of the lens 2 is 0 and the curvature radius of the surface is the same, the surface 2 is the image surface of the lens 1 and the object surface of the lens 2, the surface is a spherical surface, the curvature radius is-1.5000, the distance from the next surface (the image surface of the lens 2) is 0.4000mm, namely the center thickness of the lens 2 is 0.4000mm, the refractive index is 1.632724, and the Abbe coefficient is 23.326526.
The surface 3 is the image surface of the lens 2, which is spherical, has a curvature radius of 4.4549mm and is 0.7650mm away from the central vertex of the next surface (the object surface of the lens 3).
The parameters of the monolithic lens simulated by the optical design software are as follows:
focal length 31.43mm
1 effective light-passing area of the lens is phi 2.6mm
The detailed parameters of the design are listed in table 3, and the first row lists the main parameters of the lens, namely focal length EFL of 31.43mm, effective light-passing area of lens 1 of 2.6mm, and effective light-passing area of lens 2 of 3.0 mm.
The title column of table 3 lists: "surface", "type", "radius of curvature", "thickness", "refractive index" and "Abbe's number". The lens element material is defined by a refractive index and an abbe number. In Table 1, a blank cell in the "refractive index" column indicates that the value in the "thickness" cell next to it is the distance to the next lens surface vertex. The "refractive index" column provides the refractive index of the lens material at 588 nm.
The surface 1 is the object plane of the lens 1, the surface is a spherical surface, the curvature radius is 4.8309, the distance from the central vertex of the next surface (the image plane of the lens 1 or the object plane of the lens 2) is 1.545mm, namely the central thickness of the lens 1 is 1.545mm, the refractive index is 1.534636, and the Abbe coefficient is 56.196755.
The surface 2 is the image surface of the lens 2, and the distance between the surface and the object surface of the lens 2 is 0, and the curvature radius of the surface is the same, so that the surface 2 is the image surface of the lens 1 and the object surface of the lens 2, the surface is a spherical surface, the curvature radius is-1.6594, the distance from the next surface (the image surface of the lens 2) is 0.400mm, namely the center thickness of the lens 2 is 0.400mm, the refractive index is 1.63549, and the Abbe coefficient is 23.910931.
The surface 3 is the image surface of the lens 2, the surface is a spherical surface, the curvature radius is 24.0492mm, and the distance from the central vertex of the next surface (the object surface of the lens 3) is 0.701 mm.
2. The advantages of the series of plastic gluing are as follows:
2.1. the plastic cement can correct the distortion of the lens, especially the distortion at the edge of the wide-angle lens.
2.2. The plastic gluing piece can well eliminate chromatic aberration of the lens, so that the color of an image surface shot by the lens is more uniform, and the original color is restored.
2.3. The purchase, manufacture and production cost of the plastic lens is far lower than that of a glass gluing piece, and the production cost of an enterprise is reduced.
3. The technical difficulty of the series of plastic gluing is as follows:
3.1. the plastic gluing piece is crucial to the selection of the bonding glue, and the expansion coefficient of the glue needs to be matched with that of the plastic lens so as to achieve the bonding firmness and reliability. I successfully select proper glue by designing a DOE experiment according to past experience, and the current glued piece can meet the service life tests of 1000h at +85 ℃/85% and 1000h at +105 ℃, which is equivalent to the service life of at least 10 years.
3.2. The matching of the centers of two plastic lenses in a plastic gluing piece is particularly important, and a special gluing device is developed by my company to solve the problem of centering of the two plastic lenses, and the integral eccentricity is controlled within 1'.
3.3. The glue amount used when two lenses in the plastic cemented lens are cemented must be strictly controlled, excessive glue can overflow, and less glue can be bonded insecurely and can not pass the reliability test. The most appropriate glue amount is selected through research experiments of my department, the glue can be produced in batches, and the appearance and the function of the glued piece after the batch production can meet the 1000-hour service life test.
3.4. Glue curing parameters of two plastic lenses it was found experimentally that curing of gluing can be performed by UV. The method currently used is UV curing gluing by specifying the irradiation time, specifying the irradiation energy. And the curing condition researched by my department not only can meet the curing requirement, but also can eliminate the stress of the lens.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (9)
1. A plastic non-spherical gluing structure of a vehicle-mounted lens; the method is characterized in that: the plastic aspheric surface gluing structure of the vehicle-mounted lens comprises: the lens comprises a first lens, an adhesive layer and a second lens;
the first lens is a lens with two convex spherical surfaces; the second lens is a lens with a concave surface on one surface, and the convex spherical surface of the first lens is matched with the concave surface of the second lens; the first lens and the second lens are fixed together through an adhesive layer; and glue overflowing gaps are arranged on two sides of the groove of the concave surface of the second lens or two sides of the convex spherical surface of the first lens.
2. The plastic aspheric gluing structure of the vehicular lens according to claim 1, characterized in that: the first lens comprises a first lens object surface and a first lens image surface, the second lens comprises a second lens object surface and a second lens image surface, and the first lens image surface and the second lens object surface are fixed together through an adhesive layer; the second lens object surface is a concave surface, and the second lens image surface is a concave surface or a spherical surface.
3. The plastic aspheric gluing structure of the vehicular lens according to claim 2, characterized in that: the object surface of the first lens is a spherical surface, the curvature radius is 3.5968, the central thickness of the first lens is 1.7386mm, the refractive index is 1.543915, and the Abbe coefficient is 55.951198.
4. The plastic aspheric gluing structure of the vehicular lens according to claim 2, characterized in that: the first lens image surface is a spherical surface, and the curvature radius is-1.9281; the second lens had a center thickness of 2.4758mm, a refractive index of 1.63549, and an Abbe number of 23.910931.
5. The plastic aspheric gluing structure of the vehicular lens according to claim 2, characterized in that: the object surface of the first lens is a spherical surface, the curvature radius is 2.5379, the central thickness of the first lens is 0.9911mm, the refractive index is 1.534636, and the Abbe coefficient is 56.196755.
6. The plastic aspheric gluing structure of the vehicular lens according to claim 2, characterized in that: the image surface of the first lens is a spherical surface, and the curvature radius is-1.5000; the second lens had a center thickness of 0.4000mm, a refractive index of 1.632724, and an Abbe number of 23.326526.
7. The plastic aspheric gluing structure of the vehicular lens according to claim 2, characterized in that: the object plane of the first lens is a spherical surface, the curvature radius is 4.8309, the central thickness of the first lens is 1.545mm, the refractive index is 1.534636, and the Abbe coefficient is 56.196755.
8. The plastic aspheric gluing structure of the vehicular lens according to claim 2, characterized in that: the first lens image surface is a spherical surface, and the curvature radius is-1.6594; the second lens has a central thickness of 0.400mm, a refractive index of 1.63549 and an Abbe number of 23.910931.
9. The plastic aspheric gluing structure of the vehicular lens according to claim 1, characterized in that: the adhesive layer was formed using OP1030k glue from Nippon Denshoku industries Co., Ltd.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020794357.2U CN212255847U (en) | 2020-05-13 | 2020-05-13 | Plastic aspheric gluing structure of vehicle-mounted lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020794357.2U CN212255847U (en) | 2020-05-13 | 2020-05-13 | Plastic aspheric gluing structure of vehicle-mounted lens |
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| CN212255847U true CN212255847U (en) | 2020-12-29 |
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| CN202020794357.2U Active CN212255847U (en) | 2020-05-13 | 2020-05-13 | Plastic aspheric gluing structure of vehicle-mounted lens |
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